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5. Select a Resistor to Drive an LED

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ERJ-P06J471V
Component
DigiKey Part NoP470ADTR-ND
Mfr Part NoERJ-P06J471V
ManufacturerPanasonic Electronic Components

RES SMD 470 OHM 5% 1/2W 0805

470 Ohms ±5% 0.5W, 1/2W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200, Pulse Withstanding Thick Film

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EW

Response By EW AI

  • Resistance: 470Ω ±5%
    This matches the calculated requirement for limiting current to 22mA with a 12V supply and 2V forward voltage LED.
  • Power Rating: 0.5W (≥0.33W required)
    More than adequate for continuous operation. Actual dissipation will be ~0.22W, so this offers plenty of margin.
  • Tolerance: ±5%
    Meets the specified tolerance requirement for consistent LED brightness.
  • Mounting Type: Surface Mount (0805)
    Fully suitable for modern PCB assembly and matches the requirement.
  • Technology: Thick Film
    Acceptable per project requirements.
  • RoHS Compliance: Yes (ROHS3 Compliant)
    Meets environmental and regulatory requirements.
Conclusion:
All required specifications are met or exceeded. The selected resistor (ERJ-P06J471V) is fully suitable for safely and reliably limiting current to your 12V red LED indicator.
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